body {
    background: #fff;
    margin: 0;
    padding: 0;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body, input, button {
    font-family: 'Source Sans Pro', 'Helvetica Neue', Helvetica, 'Microsoft Yahei', Arial, sans-serif;
    font-size: 14px;
    color: #7E96B3;
}

.container {
    max-width: 480px;
    margin: 0 auto;
    padding: 20px;
    text-align: center;
}

a {
    color: #18bc9c;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

h1 {
    margin-top: 0;
    margin-bottom: 10px;
}

h2 {
    font-size: 28px;
    font-weight: normal;
    color: #3C5675;
    margin-bottom: 0;
    margin-top: 0;
}

form {
    margin-top: 40px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group .form-field:first-child input {
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
}

.form-group .form-field:last-child input {
    border-bottom-left-radius: 4px;
    border-bottom-right-radius: 4px;
}

.form-field input,.form-field textarea,.form-field select {
    background: #EDF2F7;
    margin: 0 0 1px;
    border: 2px solid transparent;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
    width: 100%;
    padding: 15px 15px 15px 180px;
    box-sizing: border-box;
}

.form-field input:focus {
    border-color: #18bc9c;
    background: #fff;
    color: #444;
    outline: none;
}

.form-field select:focus {
    border-color: #18bc9c;
    background: #fff;
    color: #444;
    outline: none;
}

.form-field label {
    float: left;
    width: 160px;
    text-align: right;
    margin-right: -160px;
    position: relative;
    margin-top: 15px;
    font-size: 14px;
    pointer-events: none;
    opacity: 0.7;
}

button, .btn {
    background: #3C5675;
    color: #fff;
    border: 0;
    font-weight: bold;
    border-radius: 4px;
    cursor: pointer;
    padding: 15px 30px;
    -webkit-appearance: none;
}

button[disabled] {
    opacity: 0.5;
}

.form-buttons {
    height: 52px;
    line-height: 52px;
}

.form-buttons .btn {
    margin-right: 5px;
}

#error, .error, #success, .success, #warmtips, .warmtips {
    background: #D83E3E;
    color: #fff;
    padding: 15px 20px;
    border-radius: 4px;
    margin-bottom: 20px;
}

#success {
    background: #3C5675;
}

#error a, .error a {
    color: white;
    text-decoration: underline;
}

#warmtips {
    background: #ffcdcd;
    font-size: 14px;
    color: #e74c3c;
}

#warmtips a {
    background: #ffffff7a;
    display: block;
    height: 30px;
    line-height: 30px;
    margin-top: 10px;
    color: #e21a1a;
    border-radius: 3px;
}
.install_logo{
    width: 300px;
}
.font-small{
    font-size: x-small;
}
.helps a:nth-of-type(n+2)::before{
    content: '|';
    padding-right: 2px;
    color:#eee;
}